Thymidine, 5′,5′′′-[[2,2-[2′,3′-dideoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]uridine-2′,3′-diyl]-1,3-dioxo-1,3-propanediyl]diimino]bis[5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-

Thymidine, 5′-(acetylamino)-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, 2′-deoxy-3′-de(phosphinicooxy)-5′-O-[(1,1-dimethylethyl)diphenylsilyl]uridylyl[[(1-methylethoxy)carbonyl]methylidyne]sulfonyl(methylimino)-(2′-3′→5′)-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3′-de(phosphinicooxy)uridylyl[(R)-methylidyne]carbonylimino-(2′-3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3′-de(phosphinicooxy)uridylyl[(S)-methylidyne]carbonylimino-(2′-3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

(1S,2R,4S,5R,6R)-2-(3,4-Dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6-carboxylic acid

(1S,2R,4S,5R,6S)-2-(3,4-Dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6-carboxylic acid

Phenylmethyl (1S,2R,4S,5R,6R)-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6-carboxylate

Phenylmethyl (1S,2R,4S,5R,6S)-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6-carboxylate

Methyl (1R,2R,4S,5S)-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-6-(phenylthio)-3-oxabicyclo[3.1.0]hexane-6-carboxylate

Phenylmethyl (1R,2R,4S,5S)-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-6-(phenylthio)-3-oxabicyclo[3.1.0]hexane-6-carboxylate

Furo[3,4-d]isoxazole-3-carboxylic acid, 4-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-6-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3a,4,6,6a-tetrahydro-, ethyl ester, 2-oxide, (3aR,4R,6R,6aS)-

(1S,2R,4S,5R,6S)-6-Cyano-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6-carboxylic acid

Phenylmethyl (1S,2R,4S,5R,6S)-6-cyano-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6-carboxylate

(1S,2R,4S,5R)-2-(3,4-Dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6,6-dicarboxylic acid

6,6-Dimethyl (1S,2R,4S,5R)-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6,6-dicarboxylate

6,6-Dimethyl (1S,2R,4S,5R)-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-4-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-3-oxabicyclo[3.1.0]hexane-6,6-dicarboxylate

2′,3′-Didehydro-2′,3′-dideoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-(phenylselenonyl)uridine

1-[(2R,5R)-5-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]-2,5-dihydro-4-(phenylselenonyl)-2-furanyl]-2,4(1H,3H)-pyrimidinedione

Uridine, 5′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-Se-phenyl-2′-seleno-, 3′-methanesulfonate